Vehicle waste heat recovery system, control method and device and electronic equipment

Abstract

The invention discloses a vehicle waste heat recovery system, a control method and device and electronic equipment. The system comprises a first heat collection circuit, a second heat collection circuit and a control circuit, and the first heat collection circuit is used for collecting heat generated by an electric drive system in a vehicle to obtain first heat; the second heat collection circuit is used for collecting heat of the external environment where the vehicle is located, and second heat is obtained; the first input end of the heat transfer line is connected with the output end of the first heat collection line to form a first waste heat recovery loop; the second input end of the heat transfer line is connected with the output end of the second heat collection line to form a second waste heat recovery loop; and the controller is used for controlling the on-off state of the first heat collection circuit and the second heat collection circuit so as to recover heat of an electric drive system in the vehicle and / or the external environment. The technical problem that in the related technology, the vehicle waste heat recovery efficiency is low is solved.

Description

Technical Field

[0001] The present invention relates to the field of waste heat recovery, and in particular to a vehicle waste heat recovery system, a control method, a device and an electronic device. Background Art

[0002] The waste heat generated by the vehicle during driving is used to recover and reuse energy, that is, to recover vehicle waste heat. Through the waste heat recovery system, waste heat can be effectively recovered and converted into electrical energy or used to heat the system inside the vehicle, thereby improving the vehicle's energy efficiency and energy-saving performance. Waste heat recovery technology can effectively reduce the vehicle's energy consumption and emissions, and is an environmentally friendly and energy-saving technology.

[0003] At present, the relevant technologies on vehicle waste heat recovery are mostly about the use of the recovered waste heat, while there are fewer studies on the heat source of vehicle waste heat recovery. That is, the method of heat collection in vehicle waste heat recovery is relatively single, resulting in low efficiency of vehicle waste heat recovery.

[0004] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0005] Embodiments of the present invention provide a vehicle waste heat recovery system, a control method, a device and an electronic device to at least solve the technical problem of low efficiency of vehicle waste heat recovery in related technologies.

[0006] According to one aspect of an embodiment of the present invention, a vehicle waste heat recovery system is provided, comprising: a first heat collection circuit, the first heat collection circuit is used to collect heat generated by an electric drive system in a vehicle to obtain a first heat; a second heat collection circuit, the second heat collection circuit is used to collect heat from an external environment in which the vehicle is located to obtain a second heat; a heat transfer circuit, a first input end of the heat transfer circuit is connected to an output end of the first heat collection circuit, and an output end of the heat transfer circuit is connected to an input end of the first heat collection circuit to form a first waste heat recovery loop; a second input end of the heat transfer circuit is connected to an output end of the second heat collection circuit, and an output end of the heat transfer circuit is connected to an input end of the second heat collection circuit to form a second waste heat recovery loop, the heat transfer circuit is used to use the first heat and / or the second heat for use by the vehicle; a controller, connected to the first heat collection circuit and the second heat collection circuit, and used to obtain current state information of the vehicle and environmental information of the external environment, determine a target waste heat recovery mode that needs to be controlled for the vehicle based on the current state information and environmental information, and control the on-off state of the first heat collection circuit and the second heat collection circuit based on the target waste heat recovery mode to recover heat from the electric drive system in the vehicle and / or the external environment.

[0007] Optionally, the heat transfer circuit includes: a first heat exchanger, an input end of the first heat exchanger is connected to a first input end of the heat transfer circuit and a second input end of the heat transfer circuit, and is used for performing heat exchange with other energy-consuming equipment on the vehicle to utilize the first heat and / or the second heat for use by other energy-consuming equipment; a compressor, an input end of the compressor is connected to an output end of the first heat exchanger, and an output end of the compressor is connected to an output end of the heat transfer circuit, and is used for controlling the heat transfer medium in the first waste heat recovery circuit and / or the second waste heat recovery circuit to be converted from a gaseous state to a liquid state, so as to control the heat transfer medium in the first waste heat recovery circuit and / or the second waste heat recovery circuit to be in a circulating flow state.

[0008] Optionally, the first heat collection circuit includes: a first switch element, a first end of the first switch element is connected to the input end of the first heat collection circuit, a control end of the first switch element is connected to the controller, and the first switch element is used to be turned on or off based on a first control signal output by the controller; a second heat exchanger, an input end of the second heat exchanger is connected to the second end of the first switch element, an output end of the second heat exchanger is connected to the output end of the first heat collection circuit, and the second heat exchanger is used to collect heat generated by the electric drive system; the second heat collection circuit includes: a second switch element, a first end of the second switch element is connected to the input end of the second heat collection circuit, a control end of the second switch element is connected to the controller, and the second switch element is used to be turned on or off based on a second control signal output by the controller; a third heat exchanger, an input end of the third heat exchanger is connected to the second end of the second switch element, an output end of the third heat exchanger is connected to the output end of the second heat collection circuit, and the third heat exchanger is used to collect heat from the external environment.

[0009] According to another aspect of an embodiment of the present invention, a vehicle waste heat recovery control method is also provided, which is applied to the above-mentioned vehicle waste heat recovery system, including: obtaining current state information of the vehicle and environmental information of the external environment in which the vehicle is located; based on the current state information and environmental information, determining a target waste heat recovery mode that the vehicle needs to be controlled to enter; based on the target waste heat recovery mode, controlling the on and off states of the first heat collection circuit and the second heat collection circuit to recover heat from the electric drive system in the vehicle and / or the external environment.

[0010] Optionally, based on the target waste heat recovery mode, the on / off state of the first heat collection circuit and the second heat collection circuit are controlled to recover heat from the electric drive system in the vehicle and / or the external environment, including: when the target waste heat recovery mode is the first waste heat recovery mode, the first heat collection circuit and the second heat collection circuit are controlled to be in the on state to recover heat from the electric drive system and the external environment; when the target waste heat recovery mode is the second waste heat recovery mode, the first heat collection circuit is controlled to be in the on state and the second heat collection circuit is in the off state to recover heat generated by the electric drive system; when the target waste heat recovery mode is the third waste heat recovery mode, the second heat collection circuit is controlled to be in the on state and the first heat collection circuit is in the off state to recover heat from the external environment.

[0011] Optionally, based on current state information and environmental information, a target waste heat recovery mode that the vehicle needs to be controlled to enter is determined, including: determining an initial waste heat recovery mode based on a first preset judgment condition set, current state information and environmental information; after the vehicle has been in the initial waste heat recovery mode for a preset period of time, determining the target waste heat recovery mode based on the initial waste heat recovery mode, the current state information and environmental information.

[0012] Optionally, the first preset judgment condition set is that there is a heat demand instruction in the current state information, and the ambient temperature in the environmental information is greater than the preset ambient temperature; based on the first preset judgment condition set, the current state information and the environmental information, the initial waste heat recovery mode is determined, including: when the current state information and the environmental information meet the first preset judgment condition, the initial waste heat recovery mode is determined to be the first waste heat recovery mode; when the current state information and the environmental information do not meet the first preset condition, the initial waste heat recovery mode is determined to be a non-waste heat recovery mode.

[0013] Optionally, after the vehicle has been in the initial waste heat recovery mode for a preset period of time, a target waste heat recovery mode is determined based on the initial waste heat recovery mode, current state information and environmental information, including: when the initial waste heat recovery mode is the first waste heat recovery mode, based on the current state information and environmental information, determining the available waste heat level of the second heat exchanger in the first heat collection circuit, the heat absorption priority state of the third heat exchanger in the second heat collection circuit and the compressor speed in the heat transfer circuit, wherein the available waste heat level is used to indicate a preset level corresponding to the current available waste heat of the second heat exchanger, and the heat absorption priority state is used to indicate whether the third heat exchanger absorbs heat preferentially compared to the second heat exchanger; based on the current state information and environmental information, the initial waste heat recovery mode is adjusted to obtain the target waste heat recovery mode.

[0014] Optionally, based on current state information and environmental information, the initial waste heat recovery mode is adjusted to obtain a target waste heat recovery mode, including: obtaining a second preset judgment condition set and a third preset judgment condition set, wherein the available waste heat level corresponding to the third preset judgment condition set is higher than the available waste heat level corresponding to the second preset judgment condition set; when the current state of the vehicle satisfies the third preset judgment condition set, determining the target waste heat recovery mode to be the second waste heat recovery mode; when the current state of the vehicle satisfies the second preset judgment condition set and does not satisfy the third preset judgment condition set, determining the target waste heat recovery mode to be the third waste heat recovery mode; when the current state of the vehicle does not satisfy the second preset judgment condition set and does not satisfy the third preset judgment condition set, determining the target waste heat recovery mode to be the first waste heat recovery mode.

[0015] Optionally, a second preset judgment condition set and a third preset judgment condition set are obtained, including: determining the condition set consisting of the available waste heat level being the first waste heat level, the heat absorption priority state being that the third heat exchanger absorbs heat preferentially compared to the second heat exchanger, and the compressor speed being less than the preset speed threshold as the second preset judgment condition set; determining the condition set consisting of the available waste heat level being the second waste heat level, the heat absorption priority state being that the second heat exchanger absorbs heat preferentially compared to the third heat exchanger, and the compressor speed being greater than or equal to the preset speed threshold as the third preset judgment condition set, wherein the second waste heat level is higher than the first waste heat level.

[0016] Optionally, based on current state information and environmental information, the available waste heat level of the second heat exchanger in the first heat collection circuit is determined, including: obtaining the saturation temperature corresponding to the input end water temperature and the refrigerant pressure of the second heat exchanger in the current state information; and determining the available waste heat level based on the difference between the input end water temperature and the saturation temperature.

[0017] Optionally, based on current state information and environmental information, determining the heat absorption priority state of the third heat exchanger in the second heat collection circuit includes: determining the heat absorption priority state based on the difference between the ambient temperature in the environmental information and the saturation temperature corresponding to the refrigerant pressure.

[0018] According to another aspect of an embodiment of the present invention, a vehicle waste heat recovery control device is also provided, including: an acquisition module, used to acquire current state information of the vehicle and environmental information of the external environment in which the vehicle is located; a determination module, used to determine a target waste heat recovery mode that the vehicle needs to be controlled to enter based on the current state information and environmental information; a control module, used to control the on-off state of the first heat collection circuit and the second heat collection circuit based on the target waste heat recovery mode, so as to recover heat from the electric drive system in the vehicle and / or the external environment.

[0019] According to another aspect of an embodiment of the present invention, there is further provided an electronic device, comprising: a memory storing an executable program; and a processor for running the program, wherein the method in each embodiment of the present invention is executed when the program is running.

[0020] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided. The computer-readable storage medium includes a stored executable program, wherein when the executable program is running, the device where the computer-readable storage medium is located is controlled to execute the methods in various embodiments of the present invention.

[0021] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a computer program. When the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0022] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0023] According to another aspect of the embodiments of the present invention, a computer program is provided. When the computer program is executed by a processor, the methods in the embodiments of the present invention are implemented.

[0024] In an embodiment of the present invention, a vehicle waste heat recovery system is provided, comprising: a first heat collection circuit, the first heat collection circuit is used to collect heat generated by an electric drive system in a vehicle to obtain a first heat; a second heat collection circuit, the second heat collection circuit is used to collect heat from an external environment in which the vehicle is located to obtain a second heat; a heat transfer circuit, a first input end of the heat transfer circuit is connected to an output end of the first heat collection circuit, and an output end of the heat transfer circuit is connected to an input end of the first heat collection circuit to form a first waste heat recovery loop; a second input end of the heat transfer circuit is connected to an output end of the second heat collection circuit, and an output end of the heat transfer circuit is connected to an input end of the second heat collection circuit to form a second waste heat recovery loop, the heat transfer circuit is used to use the first heat and / or the second heat for use by the vehicle; a controller, connected to the first heat collection circuit and the second heat collection circuit, used to obtain current state information of the vehicle and environmental information of the external environment, determine a target waste heat recovery mode that needs to be controlled for the vehicle based on the current state information and environmental information, and control the on-off state of the first heat collection circuit and the second heat collection circuit based on the target waste heat recovery mode to recover the heat of the electric drive system in the vehicle and / or the external environment. For recycling, it is easy to notice that the current state information of the vehicle and the environmental information of the external environment are obtained, and the target waste heat recovery mode that the vehicle needs to be controlled to enter is determined. The on-off state of the first heat collection circuit and the second heat collection circuit can be controlled based on the target waste heat recovery mode, that is, according to the operating state of the vehicle and the external environmental conditions, the process of recovering the heat of the electric drive system in the vehicle and the external environment is realized by controlling the on-off state of the heat collection circuit. The electric drive system in the vehicle will generate a certain amount of heat during operation. By setting the target waste heat recovery mode, it can be determined under what circumstances the heat in the vehicle needs to be recovered. The first heat collection circuit can be used to collect the heat generated by the electric drive system, and the second heat collection circuit can be used to recover the heat in the external environment. By controlling the on-off state of the first heat collection circuit and the second heat collection circuit, the heat can be flexibly recovered according to the actual situation. By controlling the on-off state of the heat collection circuit based on the target waste heat recovery mode, the heat of the electric drive system in the vehicle and the external environment can be effectively recovered, the energy efficiency and energy saving effect of the vehicle can be improved, and the technical problem of low efficiency of vehicle waste heat recovery in related technologies is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0026] Figure 1 is a schematic diagram of a vehicle waste heat recovery system according to an embodiment of the present invention;

[0027] Figure 2 is a flow chart of a vehicle waste heat recovery control method according to an embodiment of the present invention;

[0028] Figure 3 is a schematic diagram of operation in an optional first waste heat recovery mode according to an embodiment of the present invention;

[0029] Figure 4 is a schematic diagram of operation in an optional second waste heat recovery mode according to an embodiment of the present invention;

[0030] Figure 5 is a schematic diagram of operation in an optional third waste heat recovery mode according to an embodiment of the present invention;

[0031] Figure 6 is an optional flow chart for determining a target waste heat recovery mode according to an embodiment of the present invention;

[0032] Figure 7 is a schematic diagram of an optional method for determining the available waste heat level of the second heat exchanger according to an embodiment of the present invention;

[0033] Figure 8 is a schematic diagram of an optional method for determining a heat absorption priority state of a third heat exchanger according to an embodiment of the present invention;

[0034] Fig. 9 is a schematic diagram of a vehicle waste heat recovery control device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0036] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0037] According to an embodiment of the present invention, a vehicle waste heat recovery system is provided. Figure 1 is a schematic diagram of a vehicle waste heat recovery system according to the present application, such as Figure 1 As shown, the vehicle waste heat recovery system includes: a first heat collection circuit 102 , a second heat collection circuit 104 , a heat transfer circuit 106 and a controller 108 .

[0038] The first heat collection circuit 102 is used to collect heat generated by the electric drive system in the vehicle to obtain first heat.

[0039] The above-mentioned vehicle may refer to a new energy vehicle that can perform waste heat recovery function and has an electric drive system. The vehicle can recycle and reuse the heat energy generated during the operation of the vehicle. The specific type of the vehicle can be determined according to actual needs and is not limited here.

[0040] The above-mentioned vehicle waste heat recovery system may refer to a system on the vehicle that realizes energy reuse and energy conservation and emission reduction by recovering heat. Through the vehicle waste heat recovery system, the vehicle can convert waste heat into electrical energy or other forms of energy, improve fuel utilization, reduce fuel consumption and emissions, and reduce the impact on the environment.

[0041] The above-mentioned electric drive system may refer to a system on a vehicle consisting of an electric motor, an electronic controller and a battery, which is used to drive the vehicle forward or reverse. The electric drive system can replace the traditional internal combustion engine system, provide higher efficiency and lower emissions, and can also provide better power output and driving experience. The electric drive system can be used in electric vehicles or hybrid vehicles.

[0042] The above-mentioned first heat collection circuit may refer to a circuit for collecting heat generated by an electric drive system in a vehicle. The first heat collection circuit may be composed of circuits, pipes, etc. The heat collection end of the first heat collection circuit may be arranged at a position close to the electric drive system of the vehicle. The specific structure of the first heat collection circuit may be determined according to actual needs and is not limited here.

[0043] The first heat mentioned above may refer to the heat actually collected by the first heat collection circuit, and the first heat is not limited here.

[0044] In an optional embodiment, a first heat collection circuit can be used to collect heat generated by an electric drive system in a vehicle. The electric drive system may refer to components such as an electric motor and a battery in a car. The electric drive system generates a large amount of heat during operation. In order to fully utilize the heat generated by the electric drive system and facilitate the heat dissipation and cooling of the electric drive system, the vehicle waste heat recovery system can collect the heat generated by the electric drive system through a first heat collection circuit. The first heat collection circuit can absorb the heat generated by the electric drive system through a radiator or other heat exchange device to obtain the first heat. In the waste heat recovery system, the first heat can be used to heat the air inside the vehicle, heat the seats or the heating system, thereby reducing the vehicle's energy consumption and improving fuel utilization. The first heat collection circuit can effectively collect the heat generated by the electric drive system in the vehicle, provide the vehicle with an additional source of energy, thereby improving the energy efficiency and energy-saving performance of the entire vehicle.

[0045] The second heat collection circuit 104 is used to collect heat from the external environment of the vehicle to obtain second heat.

[0046] The above-mentioned second heat collection circuit may refer to a circuit for collecting heat from the external environment in which the vehicle is located. The second heat collection circuit may be composed of circuits, pipes, etc. The heat collection end of the second heat collection circuit may be arranged on the outside of the vehicle, for example, at the front end of the vehicle, the rear end of the vehicle, the top end of the vehicle, etc., and may be arranged according to actual needs. The specific structure of the second heat collection circuit may be determined according to actual needs and is not limited here.

[0047] The second heat mentioned above may refer to the heat actually collected by the second heat collection circuit, and the second heat is not limited here.

[0048] In an optional embodiment, the second heat collection circuit can be used to collect heat from the external environment of the vehicle, and convert the heat into usable energy to obtain second heat. During the driving of the vehicle, the environment around the vehicle will generate a certain amount of heat, for example, from solar radiation, engine emissions, friction during braking, etc. The second heat collection circuit absorbs the heat from the external environment of the vehicle and transfers it to the thermal energy conversion device, thereby realizing energy conversion and recycling. The second heat collection circuit can be composed of components such as heat exchangers and pipes. The heat exchanger is responsible for transferring heat between the external environment and the inside of the system, and the pipe is used to transport heat medium. Through the synergistic effect of these components, the second heat collection circuit can effectively convert the heat of the external environment into usable energy, providing additional power support for the vehicle. The second heat collection circuit effectively utilizes the heat of the external environment to realize energy recovery and reuse, improve the energy utilization efficiency of the vehicle, and reduce the impact on the environment.

[0049] The heat transfer circuit 106 has a first input end connected to an output end of the first heat collection circuit, and the output end of the heat transfer circuit is connected to an input end of the first heat collection circuit to form a first waste heat recovery circuit; a second input end of the heat transfer circuit is connected to an output end of the second heat collection circuit, and the output end of the heat transfer circuit is connected to an input end of the second heat collection circuit to form a second waste heat recovery circuit. The heat transfer circuit is used to utilize the first heat and / or the second heat for use by the vehicle.

[0050] The above-mentioned heat transfer circuit may refer to a circuit for collecting first heat and / or second heat collected by the first heat collection circuit and / or the second heat collection circuit for use by the vehicle. The use of waste heat by the vehicle may include air conditioning heating of the vehicle, seat heating of the vehicle, steering wheel heating of the vehicle, etc. The use of waste heat by the vehicle may also include converting the first heat and / or the second heat into electrical energy for use or storage. The way in which the vehicle uses waste heat can be determined according to actual needs and is not limited here.

[0051] In an optional embodiment, the heat transfer circuit can transfer heat energy from the heat collection circuit to the waste heat recovery circuit. The heat transfer circuit can have two input ends and two output ends, which are respectively connected to the first heat collection circuit and the second heat collection circuit to form a first waste heat recovery circuit and a second waste heat recovery circuit; in the first waste heat recovery circuit, the first input end of the heat transfer circuit is connected to the output end of the first heat collection circuit, and the heat energy collected from the first heat collection circuit is transferred to the heat transfer circuit, and then the output end of the heat transfer circuit is connected to the input end of the first heat collection circuit to achieve heat energy recovery and reuse; in the second waste heat recovery circuit, the second input end of the heat transfer circuit is connected to the output end of the second heat collection circuit, and the heat energy is transferred to the heat transfer circuit, and then the output end of the heat transfer circuit is connected to the input end of the second heat collection circuit to achieve heat energy recovery and reuse in the second waste heat recovery circuit. The heat transfer circuit plays a role in transferring heat energy in the vehicle waste heat recovery system, converting waste heat into reusable energy, thereby improving energy utilization efficiency and vehicle fuel economy.

[0052] The controller 108 is connected to the first heat collection circuit and the second heat collection circuit, and is used to obtain current state information of the vehicle and environmental information of the external environment, determine a target waste heat recovery mode that the vehicle needs to be controlled to enter based on the current state information and the environmental information, and control the on-off state of the first heat collection circuit and the second heat collection circuit based on the target waste heat recovery mode to recover heat from the electric drive system in the vehicle and / or the external environment.

[0053] The above-mentioned controller may be a microcontroller, a programmable logic controller, a field programmable gate array, etc. The specific type of the controller may also be determined according to actual needs and is not limited here.

[0054] The above-mentioned current status information may refer to the current / real-time status information of the vehicle regarding waste heat recovery control and logical judgment. The current status information may include information that can be directly collected by sensors and other collection devices, and may also include user-defined parameter information. The current status information may include but is not limited to the energy demand information of the vehicle or the user, the temperature and operating time of the battery and / or motor in the vehicle's electric drive system, the temperature rise curve of the battery and / or motor and other information. The current status information may also be determined according to actual needs, which is not limited here.

[0055] The above-mentioned environmental information may refer to the information of the external environment in which the vehicle needs to recover waste heat, which may include but is not limited to the temperature, humidity, atmospheric pressure and other information of the external environment. The environmental information can also be determined according to actual needs and is not limited here.

[0056] The above-mentioned target waste heat recovery mode may refer to a waste heat recovery mode determined based on current state information and environmental information, which needs to control the vehicle to enter. The target waste heat recovery mode can make the vehicle waste heat recovery system be in different working states to recover heat from the electric drive system in the vehicle and / or the external environment. The target waste heat recovery mode can be dynamically determined according to actual conditions, and the target waste heat recovery mode is not limited here.

[0057] In an optional embodiment, in a vehicle waste heat recovery system, a controller may be connected to a first heat collection circuit and a second heat collection circuit to obtain information about the current state of the vehicle and environmental information about the external environment. The controller determines a target waste heat recovery mode that the vehicle needs to be controlled to enter based on the current state information and environmental information, and controls the on / off state of the first heat collection circuit and the second heat collection circuit according to the target waste heat recovery mode. The controller may determine whether the vehicle currently needs to recover waste heat by monitoring information such as the vehicle's operating state, battery temperature, external temperature, and user heat demand. If it is determined that waste heat recovery is required, the controller controls the on / off state of the first heat collection circuit and the second heat collection circuit according to a preset recovery mode to achieve the purpose of recovering heat from the vehicle's electric drive system and / or the external environment. Through intelligent adjustment of the controller, the vehicle may achieve a good waste heat recovery effect, effectively improve energy utilization, and reduce energy waste. The controller may also protect the vehicle system from the hazards of overheating, extend the service life of the vehicle, and improve the performance and reliability of the entire vehicle.

[0058] In an embodiment of the present invention, a vehicle waste heat recovery system is provided, comprising: a first heat collection circuit, the first heat collection circuit is used to collect heat generated by an electric drive system in a vehicle to obtain a first heat; a second heat collection circuit, the second heat collection circuit is used to collect heat from an external environment in which the vehicle is located to obtain a second heat; a heat transfer circuit, a first input end of the heat transfer circuit is connected to an output end of the first heat collection circuit, and an output end of the heat transfer circuit is connected to an input end of the first heat collection circuit to form a first waste heat recovery loop; a second input end of the heat transfer circuit is connected to an output end of the second heat collection circuit, and an output end of the heat transfer circuit is connected to an input end of the second heat collection circuit to form a second waste heat recovery loop, the heat transfer circuit is used to use the first heat and / or the second heat for use by the vehicle; a controller, connected to the first heat collection circuit and the second heat collection circuit, used to obtain current state information of the vehicle and environmental information of the external environment, determine a target waste heat recovery mode that needs to be controlled for the vehicle based on the current state information and environmental information, and control the on-off state of the first heat collection circuit and the second heat collection circuit based on the target waste heat recovery mode to recover the heat of the electric drive system in the vehicle and / or the external environment. For recycling, it is easy to notice that the current state information of the vehicle and the environmental information of the external environment are obtained, and the target waste heat recovery mode that the vehicle needs to be controlled to enter is determined. The on-off state of the first heat collection circuit and the second heat collection circuit can be controlled based on the target waste heat recovery mode, that is, according to the operating state of the vehicle and the external environmental conditions, the process of recovering the heat of the electric drive system in the vehicle and the external environment is realized by controlling the on-off state of the heat collection circuit. The electric drive system in the vehicle will generate a certain amount of heat during operation. By setting the target waste heat recovery mode, it can be determined under what circumstances the heat in the vehicle needs to be recovered. The first heat collection circuit can be used to collect the heat generated by the electric drive system, and the second heat collection circuit can be used to recover the heat in the external environment. By controlling the on-off state of the first heat collection circuit and the second heat collection circuit, the heat can be flexibly recovered according to the actual situation. By controlling the on-off state of the heat collection circuit based on the target waste heat recovery mode, the heat of the electric drive system in the vehicle and the external environment can be effectively recovered, the energy efficiency and energy saving effect of the vehicle can be improved, and the technical problem of low efficiency of vehicle waste heat recovery in related technologies is solved.

[0059] Optionally, the heat transfer circuit includes: a first heat exchanger, an input end of the first heat exchanger is connected to a first input end of the heat transfer circuit and a second input end of the heat transfer circuit, and is used for performing heat exchange with other energy-consuming equipment on the vehicle to utilize the first heat and / or the second heat for use by other energy-consuming equipment; a compressor, an input end of the compressor is connected to an output end of the first heat exchanger, and an output end of the compressor is connected to an output end of the heat transfer circuit, and is used for controlling the heat transfer medium in the first waste heat recovery circuit and / or the second waste heat recovery circuit to be converted from a gaseous state to a liquid state, so as to control the heat transfer medium in the first waste heat recovery circuit and / or the second waste heat recovery circuit to be in a circulating flow state.

[0060] The above-mentioned other energy-consuming equipment may refer to equipment on the vehicle that can use the collected waste heat, which may include but is not limited to the vehicle's air-conditioning system, the vehicle's seat heating equipment, the vehicle's steering wheel heating equipment, etc. Other energy-consuming equipment can also be determined according to actual needs and is not limited here.

[0061] The above-mentioned heat transfer medium may refer to the heat transfer medium in the first waste heat recovery loop and the second waste heat recovery loop. The heat transfer medium may flow in the pipeline in the form of gas or liquid. When the heat transfer medium is converted from liquid to gas, it may absorb heat to realize heat collection; when the heat transfer medium is converted from gas to liquid, it may release heat to realize the heat release process. Through the above process, heat transfer may be realized. The heat transfer medium may be water, coolant, etc. The specific type of the heat transfer medium may be determined according to actual needs and is not limited here.

[0062] In an optional embodiment, the heat transfer circuit may include a first heat exchanger, the input end of the first heat exchanger is connected to the first input end and the second input end of the heat transfer circuit, and is used to exchange heat with other energy-consuming equipment on the vehicle, thereby utilizing the first heat and / or the second heat for use by other equipment; the input end of the compressor is connected to the output end of the first heat exchanger, and the output end is connected to the output end of the heat transfer circuit. The compressor can control the heat transfer medium to be converted from gas to liquid to control the circulation flow state of the heat transfer medium in the first heat recovery loop and / or the second waste heat recovery loop; when the vehicle's waste heat recovery system is running, the heat transfer medium transfers the first heat and / or the second heat to other energy-consuming equipment through the first heat exchanger. The function of the compressor is to ensure that the heat transfer medium maintains a circulation flow state in the loop to ensure smooth operation of the system. In the above manner, the vehicle's waste heat recovery system can make full use of the waste heat generated by the electric drive system, improve energy utilization efficiency, reduce energy waste, and thus reduce the vehicle's energy consumption and emissions.

[0063] Optionally, the first heat collection circuit includes: a first switch element, a first end of the first switch element is connected to the input end of the first heat collection circuit, a control end of the first switch element is connected to the controller, and the first switch element is used to be turned on or off based on a first control signal output by the controller; a second heat exchanger, an input end of the second heat exchanger is connected to the second end of the first switch element, an output end of the second heat exchanger is connected to the output end of the first heat collection circuit, and the second heat exchanger is used to collect heat generated by the electric drive system; the second heat collection circuit includes: a second switch element, a first end of the second switch element is connected to the input end of the second heat collection circuit, a control end of the second switch element is connected to the controller, and the second switch element is used to be turned on or off based on a second control signal output by the controller; a third heat exchanger, an input end of the third heat exchanger is connected to the second end of the second switch element, an output end of the third heat exchanger is connected to the output end of the second heat collection circuit, and the third heat exchanger is used to collect heat from the external environment.

[0064] The above-mentioned first switching element can be used to control the on-off state of the first heat collection circuit to control the on-off state of the first waste heat recovery circuit. The first switching element can be a switch, a switching tube, a relay, etc. The first switching element can be determined according to actual needs and is not limited here.

[0065] The above-mentioned second switching element can be used to control the on-off state of the second heat collection circuit to control the on-off state of the second waste heat recovery circuit. The second switching element can be a switch, a switching tube, a relay, etc. The second switching element can be determined according to actual needs and is not limited here.

[0066] In an optional embodiment, in a waste heat recovery system of a vehicle, a first heat collection circuit can be used to collect heat generated by an electric drive system and convert it into usable energy. A first end of a first switch element in the first heat collection circuit is connected to an input end of the first heat collection circuit, and a control end is connected to a controller. The first switch element can be turned on or off based on a first control signal output by the controller, thereby controlling the operating state of the first heat collection circuit; an input end of a second heat exchanger is connected to a second end of the first switch element, and an output end is connected to an output end of the first heat collection circuit. The second heat exchanger is responsible for transferring the collected heat generated by the electric drive system to the heat collection circuit for subsequent energy conversion and utilization. Through the synergistic effect of the first switch element and the second heat exchanger, the first heat collection circuit can effectively collect and convert waste heat generated by the electric drive system, thereby improving energy utilization, reducing energy waste, and realizing sustainable energy utilization.

[0067] Among them, the second heat collection circuit can collect heat from the external environment through the second heat exchanger, the first end of the second switch element in the second heat collection circuit is connected to the input end of the second heat collection circuit, and the second end of the second switch element is connected to the input end of the third heat exchanger; the controller is connected to the second switch element through the control end, and can control the on or off state of the second switch element based on the second control signal output by the controller; when the second switch element is turned on, the heat of the external environment can be collected through the third heat exchanger, and the output end of the third heat exchanger is connected to the output end of the second heat collection circuit, and the collected heat is transferred to the vehicle waste heat recovery system, and then converted into usable energy for use by the vehicle. In the above manner, the second heat collection circuit can effectively utilize the heat of the external environment, improve the energy utilization efficiency of the vehicle, and reduce energy waste. The controller can control the working state of the second switch element according to the actual working conditions and environmental conditions of the vehicle, so that the system can be more intelligent and efficient.

[0068] According to another aspect of an embodiment of the present invention, a vehicle waste heat recovery control method is also provided, which is applied to the above-mentioned vehicle waste heat recovery system. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and, although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0069] Figure 2 is a flow chart of a vehicle waste heat recovery control method according to an embodiment of the present invention. Figure 2 As shown, the method comprises the following steps:

[0070] Step S202, obtaining the current state information of the vehicle and the environmental information of the external environment in which the vehicle is located.

[0071] In an optional embodiment, in the field of waste heat recovery of a vehicle, obtaining the current status information of the vehicle may include information such as the vehicle's speed, acceleration, steering angle, engine speed, battery charge, etc. The current status information may be obtained through the vehicle's built-in sensors or vehicle-mounted systems. By obtaining the current status information, the vehicle's current working status may be understood, providing basic data for the design and control of the waste heat recovery system; obtaining environmental information of the vehicle's external environment may include information such as ambient temperature, humidity, air pressure, road conditions, etc. The environmental information may be obtained through vehicle-mounted sensors or external weather stations and other equipment. The information on the external environment provides basic data for the design and control of the waste heat recovery system, which may help the system better adapt to different external environments. By obtaining the current status information of the vehicle and the environmental information of the external environment, more accurate data and information may be provided for the design and control of the waste heat recovery system, thereby improving the efficiency and performance of the system and achieving more effective energy recovery and utilization.

[0072] Step S204: determining a target waste heat recovery mode that the vehicle needs to be controlled to enter based on current state information and environmental information.

[0073] In an optional embodiment, a target waste heat recovery mode that the vehicle needs to be controlled to enter can be determined, the vehicle's current state information and environmental information can be monitored, and then a suitable waste heat recovery mode can be selected based on the current state information and environmental information to maximize energy utilization efficiency. In terms of the electric drive system, the vehicle is usually equipped with an electric motor or a hybrid system to drive the vehicle. In this case, the electric drive system will generate a certain amount of waste heat, such as the heat generated when the motor is running. In order to maximize the use of the waste heat generated by the electric drive system, different waste heat recovery modes can be used. For example, the waste heat generated by the electric drive system can be used to heat the interior space of the vehicle to improve passenger comfort. By monitoring the vehicle's current state information and environmental information and determining the target waste heat recovery mode that the vehicle needs to be controlled to enter, the vehicle's energy utilization efficiency and performance can be maximized. In terms of waste heat recovery between the electric drive system and the external environment, selecting a suitable waste heat recovery mode can effectively utilize waste heat resources and improve the vehicle's energy efficiency and environmental performance.

[0074] Step S206, based on the target waste heat recovery mode, controlling the on / off state of the first heat collection circuit and the second heat collection circuit to recover heat from the electric drive system in the vehicle and / or the external environment.

[0075] In an optional embodiment, the on-off state of the first heat collection circuit and the second heat collection circuit can be controlled based on the target waste heat recovery mode, that is, according to the operating state of the vehicle and the external environmental conditions, the process of recovering heat from the electric drive system in the vehicle and the external environment is realized by controlling the on-off state of the heat collection circuit. The electric drive system in the vehicle will generate a certain amount of heat during operation. By setting the target waste heat recovery mode, it can be determined under what circumstances the heat in the vehicle needs to be recovered. The first heat collection circuit can be used to collect the heat generated by the electric drive system, and the second heat collection circuit can be used to recover heat from the external environment. By controlling the on-off state of the first heat collection circuit and the second heat collection circuit, heat recovery can be flexibly performed according to actual conditions. By controlling the on-off state of the heat collection circuit based on the target waste heat recovery mode, the heat of the electric drive system in the vehicle and the external environment can be effectively recovered, thereby improving the energy efficiency and energy saving effect of the vehicle.

[0076] Optionally, based on the target waste heat recovery mode, the on / off state of the first heat collection circuit and the second heat collection circuit are controlled to recover heat from the electric drive system in the vehicle and / or the external environment, including: when the target waste heat recovery mode is the first waste heat recovery mode, the first heat collection circuit and the second heat collection circuit are controlled to be in the on state to recover heat from the electric drive system and the external environment; when the target waste heat recovery mode is the second waste heat recovery mode, the first heat collection circuit is controlled to be in the on state and the second heat collection circuit is in the off state to recover heat generated by the electric drive system; when the target waste heat recovery mode is the third waste heat recovery mode, the second heat collection circuit is controlled to be in the on state and the first heat collection circuit is in the off state to recover heat from the external environment.

[0077] Figure 3 is a schematic diagram of an optional first waste heat recovery mode according to an embodiment of the present invention, such as Figure 3 As shown, the vehicle waste heat recovery system includes: a first heat exchanger 1002, a compressor 1004, a second heat exchanger 1006, a first switch element 1008, a third heat exchanger 1010 and a second switch element 1012. In the first waste heat recovery mode, the first switch element and the second switch element are both in a closed state, that is, the first heat collection circuit and the second heat collection circuit are controlled to be in a conducting state to recover heat from the electric drive system and the external environment.

[0078] Figure 4 is a schematic diagram of an optional second waste heat recovery mode according to an embodiment of the present invention, such as Figure 4 As shown, the vehicle waste heat recovery system includes: a first heat exchanger 1002, a compressor 1004, a second heat exchanger 1006, a first switch element 1008, a third heat exchanger 1010 and a second switch element 1012. In the second waste heat recovery mode, the first heat collection circuit is controlled to be in an on state and the second heat collection circuit is in an off state to recover the heat generated by the electric drive system.

[0079] Figure 5 is a schematic diagram of an optional third waste heat recovery mode according to an embodiment of the present invention, such as Figure 3 As shown, the vehicle waste heat recovery system includes: a first heat exchanger 1002, a compressor 1004, a second heat exchanger 1006, a first switch element 1008, a third heat exchanger 1010 and a second switch element 1012. In the third waste heat recovery mode, the second heat collection circuit is controlled to be in an on state and the first heat collection circuit is in an off state to recover heat from the external environment.

[0080] In an optional embodiment, the conduction state of the heat collection circuit can be controlled in different target waste heat recovery modes to achieve heat recovery from the electric drive system and the external environment. When the target waste heat recovery mode is the first waste heat recovery mode, by controlling the first and second heat collection circuits to be in the conduction state, the heat of the electric drive system and the external environment can be recovered simultaneously, thereby improving energy utilization efficiency; when the target waste heat recovery mode is the second waste heat recovery mode, by controlling the first heat collection circuit to be in the conduction state and the second heat collection circuit to be in the disconnection state, the heat generated by the electric drive system can be recovered, thereby reducing energy waste; when the target waste heat recovery mode is the third waste heat recovery mode, by controlling the second heat collection circuit to be in the conduction state and the first heat collection circuit to be in the disconnection state, the heat of the external environment can be recovered, thereby improving the thermal energy utilization efficiency of the system. By controlling the conduction state of the heat collection circuit according to different target waste heat recovery modes, the heat generated by the vehicle system and the heat of the external environment can be effectively recovered, thereby improving energy utilization efficiency, reducing energy waste, and achieving sustainable energy utilization.

[0081] Optionally, based on current state information and environmental information, a target waste heat recovery mode that the vehicle needs to be controlled to enter is determined, including: determining an initial waste heat recovery mode based on a first preset judgment condition set, current state information and environmental information; after the vehicle has been in the initial waste heat recovery mode for a preset period of time, determining the target waste heat recovery mode based on the initial waste heat recovery mode, the current state information and environmental information.

[0082] The above-mentioned first preset judgment condition set may refer to a preset condition set for determining whether the vehicle enters the initial waste heat recovery mode. The first preset judgment condition set may be determined according to actual needs, and the first preset judgment condition set is not limited here.

[0083] The above-mentioned initial waste heat recovery mode may refer to a waste heat recovery mode that the vehicle needs to be controlled to enter first. The initial waste heat recovery mode may be determined as the above-mentioned first waste heat recovery mode, second waste heat recovery mode and third waste heat recovery mode, etc. The initial waste heat recovery mode is not limited here.

[0084] The above-mentioned preset time length may refer to the time length that the vehicle needs to be controlled to be in the initial waste heat recovery mode. After the vehicle is in the initial waste heat recovery mode, the target waste heat recovery mode of the vehicle may be further determined. The preset time length may be three minutes, ten minutes, etc. There is no limitation on the preset time length here.

[0085] In an optional embodiment, the initial waste heat recovery mode can be determined based on a first preset judgment condition set, current state information and environmental information. A suitable initial waste heat recovery mode can be selected based on the first preset judgment condition set and the current state of the vehicle and the surrounding environment. After the vehicle has been in the initial waste heat recovery mode for a preset period of time, the target waste heat recovery mode can be determined based on the initial waste heat recovery mode, current state information and environmental information. After running in the initial mode for a period of time, the waste heat recovery mode may need to be adjusted to better adapt to actual operating conditions and improve system efficiency and performance based on the current state of the vehicle and changes in the surrounding environment. Through the above steps, the vehicle can dynamically adjust the waste heat recovery mode according to actual conditions to maximize the use of waste heat resources and improve fuel efficiency, thereby achieving the purpose of energy conservation and emission reduction. It can make optimized decisions based on different operating conditions and environmental conditions to provide better support for vehicle energy management.

[0086] Optionally, the first preset judgment condition set is that there is a heat demand instruction in the current state information, and the ambient temperature in the environmental information is greater than the preset ambient temperature; based on the first preset judgment condition set, the current state information and the environmental information, the initial waste heat recovery mode is determined, including: when the current state information and the environmental information meet the first preset judgment condition, the initial waste heat recovery mode is determined to be the first waste heat recovery mode; when the current state information and the environmental information do not meet the first preset condition, the initial waste heat recovery mode is determined to be a non-waste heat recovery mode.

[0087] The above-mentioned heat demand instruction may refer to an instruction generated when the vehicle or user has a demand for heat use. For example, the user turns on the heating mode of the air conditioner, and the vehicle automatically enters the cabin preheating and insulation function. The heat demand instruction can be determined according to actual needs and is not limited here.

[0088] The above-mentioned preset ambient temperature may refer to a pre-set temperature value. When the ambient temperature is greater than the preset ambient temperature, it may be when the vehicle has a heating demand and the ambient temperature and the preliminary conditions of the thermal management system are met, the waste heat recovery mode is entered. The preset ambient temperature may be zero degrees Celsius, etc. Since the vehicle waste heat recovery mode requires the operation of equipment such as compressors, which consumes energy, that is, when the ambient temperature is greater than the preset ambient temperature, controlling the vehicle to enter the waste heat recovery mode can save energy as a whole. The preset ambient temperature can be determined based on the energy that can be recovered when the vehicle enters the waste heat recovery mode and the energy required for the operation of the waste heat recovery system. The operating preset ambient temperature can be determined based on actual needs and is not limited here.

[0089] The above-mentioned non-waste heat recovery mode may refer to controlling the vehicle not to enter the waste heat recovery mode. The vehicle or the user has no heat demand, or the ambient temperature is less than or equal to the preset ambient temperature, or the preliminary conditions of the thermal management system are not met. The vehicle may be controlled not to enter the waste heat recovery mode.

[0090] In an optional embodiment, the initial waste heat recovery mode can be determined according to the current state information and environmental information, and the judgment can be made according to a first preset judgment condition set. If there is a heat demand instruction in the current state information, and the ambient temperature in the environmental information is greater than the preset ambient temperature, and the preliminary conditions of the thermal management system are met, it means that there is recoverable waste heat in the environment. In this case, the system can determine that the initial waste heat recovery mode is the first waste heat recovery mode, that is, the waste heat recovery system is started to recover the waste heat generated by the vehicle; if the current state information and environmental information do not meet the first preset judgment condition, that is, there is no heat demand instruction or the ambient temperature is not higher than the preset ambient temperature, or the preliminary conditions of the thermal management system are not met, then the system will determine the initial waste heat recovery mode as a non-waste heat recovery mode, that is, the waste heat recovery system is not started. Through the above steps, the system can determine whether it is necessary to start the waste heat recovery system according to the actual situation to recover waste heat, improve energy utilization efficiency, and reduce energy consumption and environmental pollution.

[0091] In particular, the present application determines that the initial waste heat recovery mode of the vehicle is the first waste heat recovery mode based on the first preset judgment condition set. The vehicle will be in the first waste heat recovery mode for a preset period of time, and then determine whether to switch / adjust to other waste heat recovery modes. Since in the first waste heat recovery mode, the first heat collection circuit and the second heat collection circuit are both in a conductive state and run for a preset period of time, the entire vehicle waste heat recovery system can be preheated, and the heat transfer medium can be fully pre-flowed in the entire vehicle waste heat recovery system, which is convenient for subsequent vehicles to switch efficiently between various waste heat recovery modes.

[0092] Optionally, after the vehicle has been in the initial waste heat recovery mode for a preset period of time, a target waste heat recovery mode is determined based on the initial waste heat recovery mode, current state information and environmental information, including: when the initial waste heat recovery mode is the first waste heat recovery mode, based on the current state information and environmental information, determining the available waste heat level of the second heat exchanger in the first heat collection circuit, the heat absorption priority state of the third heat exchanger in the second heat collection circuit and the compressor speed in the heat transfer circuit, wherein the available waste heat level is used to indicate a preset level corresponding to the current available waste heat of the second heat exchanger, and the heat absorption priority state is used to indicate whether the third heat exchanger absorbs heat preferentially compared to the second heat exchanger; based on the current state information and environmental information, the initial waste heat recovery mode is adjusted to obtain the target waste heat recovery mode.

[0093] The above-mentioned available waste heat level can be used to indicate the preset level corresponding to the currently available waste heat amount of the second heat exchanger. The higher the available waste heat level, the greater the currently available waste heat amount of the second heat exchanger, that is, the more heat can be collected from the electric drive system, or the higher the temperature of the electric drive system, and the electric drive system needs to be cooled.

[0094] In an optional embodiment, for the case where the initial waste heat recovery mode is the first waste heat recovery mode, a judgment can be made based on the current state information and environmental information to determine the available waste heat level of the second heat exchanger in the first heat collection circuit, the heat absorption priority state of the third heat exchanger in the second heat collection circuit, and the speed of the compressor in the heat transfer circuit; the available waste heat level of the second heat exchanger can be determined, indicating a preset level corresponding to the current available waste heat amount of the second heat exchanger, and by monitoring the working state and heat transfer of the second heat exchanger, its available waste heat level can be determined for reference in subsequent judgments; the heat absorption priority state of the third heat exchanger can be determined The state indicates whether the third heat exchanger absorbs heat preferentially compared to the second heat exchanger. By comparing the working efficiency and performance of the second heat exchanger and the third heat exchanger, it can be determined which heat collection circuit should absorb heat preferentially to ensure that the thermal energy utilization efficiency of the entire system is maximized; the compressor speed in the heat transfer circuit can be determined. The speed of the compressor can be used to judge the transmission speed and efficiency of thermal energy, thereby meeting the current thermal energy demand and environmental conditions of the vehicle. Based on the current state information and environmental information, the initial waste heat recovery mode can be adjusted to obtain the target waste heat recovery mode, thereby achieving effective recovery and utilization of vehicle waste heat and improving the energy efficiency and performance of the vehicle.

[0095] Optionally, based on current state information and environmental information, the initial waste heat recovery mode is adjusted to obtain a target waste heat recovery mode, including: obtaining a second preset judgment condition set and a third preset judgment condition set, wherein the available waste heat level corresponding to the third preset judgment condition set is higher than the available waste heat level corresponding to the second preset judgment condition set; when the current state of the vehicle satisfies the third preset judgment condition set, determining the target waste heat recovery mode to be the second waste heat recovery mode; when the current state of the vehicle satisfies the second preset judgment condition set and does not satisfy the third preset judgment condition set, determining the target waste heat recovery mode to be the third waste heat recovery mode; when the current state of the vehicle does not satisfy the second preset judgment condition set and does not satisfy the third preset judgment condition set, determining the target waste heat recovery mode to be the first waste heat recovery mode.

[0096] In an optional embodiment, the second preset judgment condition set and the third preset judgment condition set may refer to setting different condition sets to determine whether the vehicle can perform waste heat recovery based on factors such as the current state of the vehicle and environmental conditions. The available waste heat level corresponding to the third preset judgment condition set is higher than the available waste heat level corresponding to the second preset judgment condition set, that is, the third preset condition set is suitable for higher temperature conditions of the electric drive system or can collect more heat from the electric drive system.

[0097] When the current state of the vehicle satisfies the third preset judgment condition set, regardless of whether the second preset judgment condition set is met, the target waste heat recovery mode can be determined to be the second waste heat recovery mode, and the vehicle can more efficiently recover the heat generated by the electric drive system to select a waste heat recovery mode with higher efficiency; when the current state of the vehicle satisfies the second preset judgment condition set and does not meet the third preset judgment condition set, the target waste heat recovery mode can be determined to be the third waste heat recovery mode, that is, the heat from the external environment is recovered; when the current state of the vehicle does not meet the second preset judgment condition set and does not meet the third preset judgment condition set, the target waste heat recovery mode is determined to be the first waste heat recovery mode, that is, the vehicle still operates in the first waste heat recovery mode. Through the above steps, the most suitable waste heat recovery mode can be determined according to the actual situation of the vehicle and environmental conditions to maximize energy utilization efficiency and reduce impact on the environment.

[0098] Figure 6 is a flow chart of an optional determination of a target waste heat recovery mode according to an embodiment of the present invention, such as Figure 6 As shown, including:

[0099] Step S602, obtaining the current state information of the vehicle and the environmental information of the external environment in which the vehicle is located.

[0100] Step S604, based on the first preset judgment condition set, current state information and environmental information, determine the initial waste heat recovery mode. When the current state information and environmental information do not meet the first preset condition, determine the initial waste heat recovery mode as a non-waste heat recovery mode. When the current state information and environmental information meet the first preset judgment condition, determine the initial waste heat recovery mode as the first waste heat recovery mode.

[0101] Step S606: When the current state of the vehicle does not satisfy the second preset judgment condition set and does not satisfy the third preset judgment condition set, the target waste heat recovery mode is determined to be the first waste heat recovery mode; when the current state of the vehicle satisfies the third preset judgment condition set, the target waste heat recovery mode is determined to be the second waste heat recovery mode; when the current state of the vehicle satisfies the second preset judgment condition set and does not satisfy the third preset judgment condition set, the target waste heat recovery mode is determined to be the third waste heat recovery mode.

[0102] Step S608: Based on the target waste heat recovery mode, the on / off states of the first heat collection circuit and the second heat collection circuit are controlled to recover heat from the electric drive system in the vehicle and / or the external environment.

[0103] Optionally, a second preset judgment condition set and a third preset judgment condition set are obtained, including: determining the condition set consisting of the available waste heat level being the first waste heat level, the heat absorption priority state being that the third heat exchanger absorbs heat preferentially compared to the second heat exchanger, and the compressor speed being less than the preset speed threshold as the second preset judgment condition set; determining the condition set consisting of the available waste heat level being the second waste heat level, the heat absorption priority state being that the second heat exchanger absorbs heat preferentially compared to the third heat exchanger, and the compressor speed being greater than or equal to the preset speed threshold as the third preset judgment condition set, wherein the second waste heat level is higher than the first waste heat level.

[0104] In an optional embodiment, a process of determining a preset judgment condition set can be performed based on different condition sets. Specifically, when the available waste heat level in the vehicle system is the first waste heat level, and the heat absorption priority state is that the third heat exchanger absorbs heat preferentially compared to the second heat exchanger, and the compressor speed is less than the preset speed threshold, these conditions constitute a second preset judgment condition set; when the available waste heat level is the second waste heat level, the heat absorption priority state is that the second heat exchanger absorbs heat preferentially compared to the third heat exchanger, and the compressor speed is greater than or equal to the preset speed threshold, these conditions constitute a third preset judgment condition set, and the second waste heat level is higher than the first waste heat level. Through the combination and judgment of the above conditions, the working state and priority of the vehicle system in the waste heat recovery process can be effectively determined, thereby achieving more efficient energy utilization and system operation.

[0105] Optionally, based on current state information and environmental information, the available waste heat level of the second heat exchanger in the first heat collection circuit is determined, including: obtaining the saturation temperature corresponding to the input end water temperature and the refrigerant pressure of the second heat exchanger in the current state information; and determining the available waste heat level based on the difference between the input end water temperature and the saturation temperature.

[0106] In an optional embodiment, the saturation temperature corresponding to the water temperature and the refrigerant pressure at the input end of the second heat exchanger can be obtained, which can help determine the working state inside the heat exchanger, thereby better utilizing the waste heat; the saturation temperature corresponding to the water temperature and the refrigerant pressure at the input end of the second heat exchanger is obtained, the input end water temperature refers to the temperature of the cooling water entering the heat exchanger, and the saturation temperature corresponding to the refrigerant pressure refers to the temperature of the refrigerant in the saturated state under a specific pressure, which can be obtained in real time through sensors and monitoring equipment, and the available waste heat level is determined based on the difference between the input end water temperature and the saturation temperature. The available waste heat level refers to the amount of waste heat that can be converted into useful The degree of energy use, the greater the difference between the input water temperature and the saturation temperature, the higher the working efficiency inside the heat exchanger, and the higher the available waste heat level. By determining this difference, the performance of the heat exchanger can be evaluated, and the operation of the waste heat recovery system can be optimized to improve energy utilization efficiency; obtaining the saturation temperature corresponding to the input water temperature and refrigerant pressure of the second heat exchanger in the current status information, and determining the available waste heat level based on the difference between the input water temperature and the saturation temperature are important steps to optimize the performance of the vehicle's waste heat recovery system. By real-time monitoring and analysis of the above data, waste heat resources can be effectively utilized to improve the energy utilization efficiency of the vehicle.

[0107] Figure 7 is a schematic diagram of an optional method for determining the available waste heat level of the second heat exchanger according to an embodiment of the present invention, such as Figure 7 As shown, the horizontal axis of the image can represent the difference between the water temperature at the input end and the saturation temperature, and the vertical axis can represent the available waste heat level. The horizontal axis has preset values ​​XC, XD, XE, and XF, which can be determined according to actual needs and are not limited here. The available waste heat levels corresponding to the vertical axis include level 1, level 2, and level 3, and the available waste heat level can also be determined according to actual needs and are not limited here.

[0108] Optionally, determining the heat absorption priority state of the third heat exchanger in the second heat collection circuit based on the current state information and the environmental information includes: determining the heat absorption priority state based on the difference between the ambient temperature and the saturation temperature in the environmental information.

[0109] In an optional embodiment, the ambient temperature may refer to the actual temperature around the vehicle, and the saturation temperature corresponding to the refrigerant pressure refers to the temperature when the refrigerant reaches a saturated state under a specific pressure. In the waste heat recovery system, the refrigerant absorbs the waste heat generated by the engine through a circulating flow and converts it into usable energy. When the ambient temperature is higher than the saturation temperature corresponding to the refrigerant pressure, the efficiency of the refrigerant in absorbing waste heat will decrease because the refrigerant cannot effectively absorb waste heat at a higher temperature. By comparing the difference between the ambient temperature and the saturation temperature corresponding to the refrigerant pressure, the heat absorption priority state can be determined. If the difference is small, it means that the ambient temperature is close to or higher than the saturation temperature corresponding to the refrigerant. At this time, priority should be given to stopping the operation of the waste heat recovery device to avoid wasting energy. On the contrary, if the difference is large, it means that the ambient temperature is low. At this time, the waste heat recovery device can continue to be started to improve energy utilization efficiency. By monitoring the difference between the ambient temperature and the saturation temperature corresponding to the refrigerant pressure, the working state of the waste heat recovery system can be effectively controlled to achieve optimal energy utilization efficiency.

[0110] Figure 8 is a schematic diagram of an optional method for determining a heat absorption priority state of the third heat exchanger according to an embodiment of the present invention, such as Figure 8 As shown, the horizontal axis of the image can represent the difference between the ambient temperature and the saturation temperature, and the vertical axis can represent the heat absorption priority level. The horizontal axis has preset values ​​XA and XB, which can be determined according to actual needs and are not limited here. The heat absorption priority state corresponding to the vertical axis can include preferentially absorbing heat from the second heat exchanger and preferentially absorbing heat from the third heat exchanger. The heat absorption priority state can also be determined according to actual needs and is not limited here.

[0111] Exemplarily, the following Table 1 is an optional parameter value table according to an embodiment of the present invention:

[0112] Table 1

[0113] Preset Parameters Example possible values XA 2(℃) XB 4(℃) XC 4(℃) XD 8(℃) XE 28(℃) XF 30(℃) Preset speed threshold 1500 / 1800 etc. (r / min)

[0114] According to another aspect of an embodiment of the present invention, a vehicle waste heat recovery control device is also provided, which can execute the vehicle waste heat recovery control method of the above embodiment. The specific implementation method and preferred application scenario are the same as the above embodiment and will not be repeated here.

[0115] Fig. 9 is a schematic diagram of a vehicle waste heat recovery control device according to an embodiment of the present application, such as Fig. 9 As shown, the device includes the following: an acquisition module 902 , a determination module 904 , and a control module 906 .

[0116] Among them, the acquisition module 902 is used to obtain the current state information of the vehicle and the environmental information of the external environment in which the vehicle is located; the determination module 904 is used to determine the target waste heat recovery mode that the vehicle needs to be controlled to enter based on the current state information and environmental information; the control module 906 is used to control the on-off state of the first heat collection circuit and the second heat collection circuit based on the target waste heat recovery mode, so as to recover the heat of the electric drive system in the vehicle and / or the external environment.

[0117] Among them, the control module is also used to control the first heat collection circuit and the second heat collection circuit to be in a conducting state when the target waste heat recovery mode is the first waste heat recovery mode, so as to recover the heat from the electric drive system and the external environment; when the target waste heat recovery mode is the second waste heat recovery mode, control the first heat collection circuit to be in a conducting state, and the second heat collection circuit to be in a disconnected state, so as to recover the heat generated by the electric drive system; when the target waste heat recovery mode is the third waste heat recovery mode, control the second heat collection circuit to be in a conducting state, and the first heat collection circuit to be in a disconnected state, so as to recover the heat from the external environment.

[0118] Among them, the determination module is also used to determine the initial waste heat recovery mode based on the first preset judgment condition set, current state information and environmental information; after the vehicle has been in the initial waste heat recovery mode for a preset period of time, the target waste heat recovery mode is determined based on the initial waste heat recovery mode, current state information and environmental information.

[0119] Among them, the first preset judgment condition set is that there is a heat demand instruction in the current state information, and the ambient temperature in the environmental information is greater than the preset ambient temperature; the determination module is also used to determine that the initial waste heat recovery mode is the first waste heat recovery mode when the current state information and the environmental information meet the first preset judgment condition; when the current state information and the environmental information do not meet the first preset condition, determine that the initial waste heat recovery mode is a non-waste heat recovery mode.

[0120] Among them, the determination module is also used to determine, when the initial waste heat recovery mode is the first waste heat recovery mode, based on current state information and environmental information, the available waste heat level of the second heat exchanger in the first heat collection circuit, the heat absorption priority state of the third heat exchanger in the second heat collection circuit, and the compressor speed in the heat transfer circuit, wherein the available waste heat level is used to indicate the preset level corresponding to the current available waste heat amount of the second heat exchanger, and the heat absorption priority state is used to indicate whether the third heat exchanger has priority over the second heat exchanger in absorbing heat; based on the current state information and environmental information, the initial waste heat recovery mode is adjusted to obtain the target waste heat recovery mode.

[0121] Among them, the determination module is also used to obtain a second preset judgment condition set and a third preset judgment condition set, wherein the available waste heat level corresponding to the third preset judgment condition set is higher than the available waste heat level corresponding to the second preset judgment condition set; when the current state of the vehicle satisfies the third preset judgment condition set, the target waste heat recovery mode is determined to be the second waste heat recovery mode; when the current state of the vehicle satisfies the second preset judgment condition set and does not satisfy the third preset judgment condition set, the target waste heat recovery mode is determined to be the third waste heat recovery mode; when the current state of the vehicle does not satisfy the second preset judgment condition set and does not satisfy the third preset judgment condition set, the target waste heat recovery mode is determined to be the first waste heat recovery mode.

[0122] Among them, the determination module is also used to determine the condition set consisting of the available waste heat level being the first waste heat level, the heat absorption priority state being that the third heat exchanger absorbs heat preferentially compared to the second heat exchanger, and the compressor speed being less than the preset speed threshold as the second preset judgment condition set; and the condition set consisting of the available waste heat level being the second waste heat level, the heat absorption priority state being that the second heat exchanger absorbs heat preferentially compared to the third heat exchanger, and the compressor speed being greater than or equal to the preset speed threshold is determined as the third preset judgment condition set, wherein the second waste heat level is higher than the first waste heat level.

[0123] Among them, the determination module is also used to obtain the saturation temperature corresponding to the input end water temperature and the refrigerant pressure of the second heat exchanger in the current state information; and determine the available waste heat level based on the difference between the input end water temperature and the saturation temperature.

[0124] The determination module is further used to determine the heat absorption priority state based on the difference between the ambient temperature and the saturation temperature in the environmental information.

[0125] An embodiment of the present application further provides an electronic device, comprising: a memory storing an executable program; and a processor for running the program, wherein the program executes the methods in various embodiments of the present invention when running.

[0126] The above-mentioned memory may refer to a device inside a computer for storing data and programs, and may include memory, hard disk, etc., wherein the memory may be used to temporarily store running programs and data, the hard disk may be used to store programs and data for a long time, and the memory may be used to enable the computer to read and write data, and execute programs; the above-mentioned processor may be responsible for executing instructions in computer programs and performing data processing, and may be responsible for controlling and executing various operations, including arithmetic operations, logical operations, data transmission, etc.

[0127] An embodiment of the present application further provides a computer-readable storage medium, which includes a stored executable program, wherein when the executable program is running, the device where the computer-readable storage medium is located is controlled to execute the methods in various embodiments of the present invention.

[0128] The above-mentioned computer storage medium may refer to a medium in a computer memory used to store certain discontinuous physical quantities. Computer storage media mainly include semiconductors, magnetic cores, magnetic drums, magnetic tapes, laser disks, etc.; the stored program included in the computer-readable storage medium may be a set of instructions that can be recognized and executed by a computer, running on an electronic computer, and is an information tool that meets certain needs of people.

[0129] An embodiment of the present application further provides a computer program product, including a computer program, which implements the methods in various embodiments of the present invention when executed by a processor.

[0130] The above-mentioned computer program product may refer to a software program that has been written, tested and released and can be run on a computer or other device. The computer program product may include an application, an operating system, tool software, etc., which is used to implement specific functions or solve specific problems.

[0131] An embodiment of the present application further provides a computer program product, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium is used to store a computer program, and when the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0132] The above-mentioned non-volatile computer-readable storage medium may refer to a medium for storing data. The non-volatile computer-readable storage medium can keep the data from being lost when the power is off, and can be used to store long-term data, such as operating systems, applications, and user files. The non-volatile storage medium may include hard disk drives, solid-state drives, optical disks, and flash memory storage devices, etc.

[0133] The embodiments of the present application further provide a computer program, which implements the methods in the above-mentioned embodiments of the present invention when executed by a processor.

[0134] The above-mentioned computer program may refer to a collection of instructions used to tell a computer to perform a specific task or operation. A computer program may be written by a programmer using a specific programming language and may include algorithms, data structures, logic, and control flows. A computer program may be used for a variety of purposes, including application software, operating systems, and the like.

[0135] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0136] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0137] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0138] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0139] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0140] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A vehicle waste heat recovery system, characterized in that: include: A first heat collection circuit, wherein the first heat collection circuit is used to collect heat generated by an electric drive system in a vehicle to obtain a first heat; A second heat collection circuit, the second heat collection circuit is used to collect heat from the external environment of the vehicle to obtain a second heat; a heat transfer circuit, wherein a first input end of the heat transfer circuit is connected to an output end of the first heat collection circuit, and an output end of the heat transfer circuit is connected to an input end of the first heat collection circuit to form a first waste heat recovery circuit; a second input end of the heat transfer circuit is connected to an output end of the second heat collection circuit, and an output end of the heat transfer circuit is connected to an input end of the second heat collection circuit to form a second waste heat recovery circuit, and the heat transfer circuit is used to utilize the first heat and / or the second heat for use by the vehicle; A controller is connected to the first heat collection circuit and the second heat collection circuit, and is used to obtain current state information of the vehicle and environmental information of the external environment, determine a target waste heat recovery mode that the vehicle needs to be controlled to enter based on the current state information and the environmental information, and control the on-off state of the first heat collection circuit and the second heat collection circuit based on the target waste heat recovery mode to recover heat from the electric drive system in the vehicle and / or the external environment.

2. The vehicle waste heat recovery system according to claim 1, characterized in that: The heat transfer circuit comprises: a first heat exchanger, wherein an input end of the first heat exchanger is connected to a first input end of the heat transfer circuit and a second input end of the heat transfer circuit, and is used to perform heat exchange with other energy-consuming devices on the vehicle, so as to utilize the first heat and / or the second heat for use by the other energy-consuming devices; A compressor, wherein the input end of the compressor is connected to the output end of the first heat exchanger, and the output end of the compressor is connected to the output end of the heat transfer circuit, and is used to control the heat transfer medium in the first waste heat recovery circuit and / or the second waste heat recovery circuit to be converted from gas to liquid, so as to control the heat transfer medium in the first waste heat recovery circuit and / or the second waste heat recovery circuit to be in a circulating flow state.

3. The vehicle waste heat recovery system according to claim 1, characterized in that: The first heat collection circuit includes: a first switch element, a first end of the first switch element is connected to an input end of the first heat collection circuit, a control end of the first switch element is connected to the controller, and the first switch element is used to be turned on or off based on a first control signal output by the controller; a second heat exchanger, an input end of the second heat exchanger is connected to a second end of the first switch element, an output end of the second heat exchanger is connected to an output end of the first heat collection circuit, and the second heat exchanger is used to collect heat generated by the electric drive system; The second heat collection circuit includes: a second switch element, a first end of the second switch element is connected to an input end of the second heat collection circuit, a control end of the second switch element is connected to the controller, and the second switch element is used to be turned on or off based on a second control signal output by the controller; a third heat exchanger, an input end of the third heat exchanger is connected to a second end of the second switch element, an output end of the third heat exchanger is connected to an output end of the second heat collection circuit, and the third heat exchanger is used to collect heat from the external environment.

4. A vehicle waste heat recovery control method, characterized in that: Applicable to the vehicle waste heat recovery system according to any one of claims 1 to 3, the method comprising: Acquiring current state information of the vehicle and environmental information of the external environment in which the vehicle is located; Based on the current state information and the environment information, determining a target waste heat recovery mode that the vehicle needs to be controlled to enter; Based on the target waste heat recovery mode, the on / off states of the first heat collection circuit and the second heat collection circuit are controlled to recover heat from the electric drive system in the vehicle and / or the external environment.

5. The vehicle waste heat recovery control method according to claim 4, characterized in that: Based on the target waste heat recovery mode, controlling the on / off state of the first heat collection circuit and the second heat collection circuit to recover heat from the electric drive system in the vehicle and / or the external environment includes: When the target waste heat recovery mode is the first waste heat recovery mode, controlling the first heat collection circuit and the second heat collection circuit to be in a conducting state to recover heat from the electric drive system and the external environment; When the target waste heat recovery mode is the second waste heat recovery mode, controlling the first heat collection circuit to be in an on state and the second heat collection circuit to be in an off state, so as to recover the heat generated by the electric drive system; When the target waste heat recovery mode is the third waste heat recovery mode, the second heat collection circuit is controlled to be in an on state and the first heat collection circuit is controlled to be in an off state to recover heat from the external environment.

6. The vehicle waste heat recovery control method according to claim 4, characterized in that: Determining a target waste heat recovery mode that the vehicle needs to be controlled to enter based on the current state information and the environment information includes: Determining an initial waste heat recovery mode based on a first preset judgment condition set, the current state information and the environmental information; After the vehicle is in the initial waste heat recovery mode for a preset time period, the target waste heat recovery mode is determined based on the initial waste heat recovery mode, the current state information and the environmental information.

7. The vehicle waste heat recovery control method according to claim 6, characterized in that: The first preset judgment condition set is that there is a heat demand instruction in the current state information, and the ambient temperature in the environmental information is greater than the preset ambient temperature; Determining an initial waste heat recovery mode based on a first preset judgment condition set, the current state information, and the environmental information includes: When the current state information and the environment information meet the first preset judgment condition, determining that the initial waste heat recovery mode is the first waste heat recovery mode; When the current state information and the environment information do not satisfy the first preset condition, the initial waste heat recovery mode is determined to be a non-waste heat recovery mode.

8. The vehicle waste heat recovery control method according to claim 6, characterized in that: After the vehicle is in the initial waste heat recovery mode for a preset time, determining the target waste heat recovery mode based on the initial waste heat recovery mode, the current state information and the environmental information includes: In the case where the initial waste heat recovery mode is the first waste heat recovery mode, based on the current state information and the environmental information, determine the available waste heat level of the second heat exchanger in the first heat collection circuit, the heat absorption priority state of the third heat exchanger in the second heat collection circuit, and the compressor speed in the heat transfer circuit, wherein the available waste heat level is used to indicate the preset level corresponding to the current available waste heat amount of the second heat exchanger, and the heat absorption priority state is used to indicate whether the third heat exchanger has a priority in absorbing heat compared to the second heat exchanger; Based on the current state information and the environmental information, the initial waste heat recovery mode is adjusted to obtain the target waste heat recovery mode.

9. The vehicle waste heat recovery control method according to claim 8, characterized in that: Based on the current state information and the environment information, the initial waste heat recovery mode is adjusted to obtain the target waste heat recovery mode, including: Acquire a second preset judgment condition set and a third preset judgment condition set, wherein the available residual heat level corresponding to the third preset judgment condition set is higher than the available residual heat level corresponding to the second preset judgment condition set; When the current state of the vehicle satisfies the third preset judgment condition set, determining that the target waste heat recovery mode is the second waste heat recovery mode; When the current state of the vehicle satisfies the second preset judgment condition set and does not satisfy the third preset judgment condition set, determining that the target waste heat recovery mode is a third waste heat recovery mode; When the current state of the vehicle does not satisfy the second preset judgment condition set and does not satisfy the third preset judgment condition set, the target waste heat recovery mode is determined to be the first waste heat recovery mode.

10. The vehicle waste heat recovery control method according to claim 9, characterized in that: Obtaining a second preset judgment condition set and a third preset judgment condition set includes: The condition set consisting of the available waste heat level being the first waste heat level, the heat absorption priority state being that the third heat exchanger absorbs heat preferentially compared to the second heat exchanger, and the compressor speed being less than a preset speed threshold is determined as the second preset judgment condition set; The condition set consisting of the available waste heat level being the second waste heat level, the heat absorption priority state being that the second heat exchanger absorbs heat preferentially compared to the third heat exchanger, and the compressor speed being greater than or equal to the preset speed threshold is determined as the third preset judgment condition set, wherein the second waste heat level is higher than the first waste heat level.

11. The vehicle waste heat recovery control method according to claim 8, characterized in that: Determining the available waste heat level of the second heat exchanger in the first heat collection circuit based on the current state information and the environment information includes: Obtaining the saturation temperature corresponding to the water temperature at the input end of the second heat exchanger and the refrigerant pressure in the current state information; The available waste heat level is determined based on a difference between the input water temperature and the saturation temperature.

12. The vehicle waste heat recovery control method according to claim 8, characterized in that: Determining the heat absorption priority state of the third heat exchanger in the second heat collection circuit based on the current state information and the environmental information includes: The heat absorption priority state is determined based on the difference between the ambient temperature in the environmental information and the saturation temperature corresponding to the refrigerant pressure.

13. A vehicle waste heat recovery control device, characterized in that: include: An acquisition module, used to acquire current state information of the vehicle and environmental information of the external environment in which the vehicle is located; a determination module, configured to determine a target waste heat recovery mode that the vehicle needs to be controlled to enter based on the current state information and the environment information; A control module is used to control the on / off state of the first heat collection circuit and the second heat collection circuit based on the target waste heat recovery mode, so as to recover heat from the electric drive system in the vehicle and / or the external environment.

14. An electronic device, characterized in that: include: A memory storing an executable program; A processor is used to run the program, wherein the vehicle waste heat recovery control method according to any one of claims 4 to 12 is executed when the program is running.

15. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored executable program, wherein when the executable program is running, the device where the storage medium is located is controlled to execute the vehicle waste heat recovery control method according to any one of claims 4 to 12.

16. A computer program product, characterized in that It comprises a computer program, which, when executed by a processor, implements the vehicle waste heat recovery control method according to any one of claims 4 to 12.

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